State Proline XE Series 180,000 BTU Condensing Gas Tankless Water Heater - SGTS340X3NIH

State Proline XE Series 180,000 BTU Condensing Gas Tankless Water Heater - SGTS340X3NIH

The Proline XE Condensing Ultra-Low NOx series with X3 Scale Prevention Technology is well suited for residential applications. State has combined water heating and treatment in a product designed to revolutionize tankless water heating. Their new condensing gas tankless line features X3 Scale Prevention Technology to last three times longer than other tankless models without X3 Technology.

The GTS-340HX3-NIH tankless water heater uses up to 180,000 BTU/hr of natural gas to deliver an endless supply of hot water for a 2.5 bath home in northern climates and up to a 3.5 bath home in southern climates (one shower head per bath).

Features

• Energy Star Qualified
• X3 Scale Prevention Technology
• No annual descaling required
• No scale buildup means the heater lasts 3 times longer than competiros and maintains like-new performance longer
• Primary heat exchanger is constructed of a commercial-grade copper that is more resilient to corrorsion than other materials
• Secondary heat exchanger is made of 316L Stainless Steel to protect against corrosion
• Qualified as lead free under the Safe Drinking Water Act
• Exhaust and water temperature safety controls
• Overheat cut-off fuse
• Air-fuel ratio (AFR) sensor
• Internal freeze protection system
• Tankless water heaters with X3 Technology are approved to work with an external recirculation pump and cross-over valve
• Category III or IV venting can be used

What Our Experts Think

• 180,000 BTU output delivers high-demand hot water for residential use.

• X3 Scale Prevention Technology extends lifespan up to 3x versus standard tankless models.

• Ultra-Low NOx design ensures environmentally friendly operation.

• Continuous hot water supply without interruptions.

• Condensing technology maximizes energy efficiency and reduces utility costs.

Q&A

• Q: What applications is this heater best for?
  A: Residential homes needing high-efficiency, continuous hot water.

• Q: How does X3 Technology help?
  A: Prevents scale buildup, reducing maintenance and extending unit lifespan.

• Q: Is it eco-friendly?
  A: Yes, it operates with Ultra-Low NOx emissions.

• Q: What is the BTU rating?
  A: 180,000 BTU for reliable performance in demanding applications.

Maintenance Tips

• Flush the unit annually to remove mineral buildup.

• Clean inlet filters regularly to maintain efficiency.

• Inspect venting and gas connections periodically.

• Schedule professional servicing every 1–2 years.

• Use compatible water treatment solutions to support X3 Technology and prevent scaling.